Source-backed catalogue
Verified boiler fault-code guides
Choose a supported model and code to read the catalogue entry and its source documents.
Main Heating · Eco Compact Combi 25–30
- Main Heating 110Safety thermostat operated.
- Main Heating 118Primary system water pressure too low.
- Main Heating 125Primary circulation fault.
- Main Heating 133133 indicates an interruption of gas supply or flame failure.
- Main Heating 109Pre-circulation fault
- Main Heating 160Fan or fan wiring fault
- Main Heating 270Circulation fault (Dry fire)
- Main Heating 321Hot water NTC fault
- Main Heating 130Flue NTC operated
- Main Heating 384False flame
- Main Heating 20Central heating NTC sensor fault.
- Main Heating 40Central heating return NTC sensor fault.
- Main Heating 83Communication error.
- Main Heating 154Flow/return sensor temperature test fault.
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